Looks like those who get the 3rd suspension in a row are pretty much out of the game (competitively)

I , as a 14 day suspension player , have been deemed ineligible for rewards this season , even though ive been trying my hardest just to hit D5 , when i asked a rioter about the rewards and got this answer , i was truely shocked , but i guess its my fault after all , too bad cause i've been looking to climb as quickly as possible after the unban to D5 to get that border but sadly it is what is , i guess there is no point of playing ranked now, another season gone to waste.

you reap what you sow , to all those who are still unsuspended , make sure you dont get one single suspension , its gonna eventually completely stop you from playing competitively if you keep getting more and more suspensions since everyone in this game is playing for rewards and for rank.